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Dear Dr. Roach: At what point is high blood pressure a medical emergency (i.e., needs to be treated today, or at least before, say, going out of the country next week)? I’ve never had an issue with high blood pressure.

Dear Dr. Roach: Our 31-year-old daughter has fought a losing battle with acne since adolescence. Accutane has been suggested many times, and now she is about to begin treatment. We have always been too afraid of this powerful drug to try it.

Dear Dr.

Dear Dr. Roach: I am a patient with myelofibrosis, and have been under treatment for over three years.

Researchers recommend people be tested based on their age — not just possible risk factors

Dear Dr. Roach: I am asking for a restatement/clarification of your position on flu shots for those who have had autoimmune disorders. I am a 69-year-old male who suffered an attack of Guillain-Barre syndrome in 1973.

How would you react if you saw people dumping 800,000 gallons of formaldehyde, a carcinogenic substance, into the earth every year? Then witness them cutting down four million acres of forests annually? I suspect the environmentalists who fight under

Dear Dr. Roach: I am a 62-year-old woman in excellent health. I eat right, exercise and have a great genetic history. I have no high blood pressure.

Dear Dr. Roach: I am a man in my late 50s. I now am told to sleep on my right side and not my left side, because it’s better for the heart. However, my sinuses seem to open up and it’s easier to breathe lying on my left side.

Dear Dr. Roach: I have been reading a lot about the cardiovascular and general health benefits of supplemental vitamin C and lysine given that human beings are the only animal that does not produce vitamin C.